Is your 2004 Chrysler Pacifica giving you headaches with unpredictable stalling, a persistent check engine light, or a complete refusal to start? These frustrating and concerning issues often point directly to a failing Engine Control Module (ECM). Don’t let a faulty computer keep your family’s vehicle parked. This professionally programmed engine computer is the straightforward, reliable solution to restore your Pacifica’s performance and dependability.
Common Symptoms & Your Solution
A failing engine computer can cause a wide range of problems that can be difficult to diagnose. If you’re experiencing any of the following, this part is your definitive fix. This replacement 2004 Chrysler Pacifica ECM is engineered to resolve issues such as:
- Check Engine Light with codes like P0601 (Internal Control Module Memory Check Sum Error)
- Sudden engine stalling or stumbling
- Engine misfires or rough idling
- Poor fuel economy
- No-start or hard-start conditions
- Erratic transmission shifting behavior
By replacing your old module with this pre-programmed unit, you’re not just fixing a part; you’re restoring the core of your vehicle’s engine management system for smooth, efficient, and reliable operation.
Features & Tangible Benefits
- ✔ Perfect Vehicle Match: We program this module to your vehicle’s unique VIN and mileage, ensuring it works seamlessly with your Pacifica’s systems right out of the box.
- ✔ Truly Plug & Play: Forget about expensive trips to the dealership or specialized tools. Simply install the unit, connect the harnesses, and you’re ready to drive. No additional programming is required.
- ✔ Guaranteed Compatibility: This module is a direct, reliable replacement for a range of part numbers, including 4748330AD, 04748331AC, 05094241AB, 05094241AA, and 4748331AB.
- ✔ Restored Drivability: Eliminate the frustrating symptoms of a bad computer and enjoy the smooth acceleration, stable idle, and crisp performance your Pacifica was designed to deliver.
- ✔ Purchase with Confidence: This unit is backed by our one-year replacement warranty.
Expert Insight: The Intermittent Problem Solver
We recently worked with a customer whose 2004 Pacifica had an intermittent stalling issue that two different shops couldn’t pin down. They replaced sensors and plugs, but the problem persisted, only happening once the engine was warm. This is a classic sign of an ECM with failing internal components. Installing our pre-programmed 2004 Chrysler Pacifica ECM resolved the issue in under 30 minutes, saving the owner from further diagnostic guesswork and giving them back a dependable family vehicle they could trust.
Frequently Asked Questions
What information do you need to program the ECM?
To ensure a perfect Plug & Play experience, we require your vehicle’s 17-digit Vehicle Identification Number (VIN) and the current mileage. This allows us to program the computer to match your Pacifica’s specific configuration.
Is this really a “Plug and Play” installation?
Yes, absolutely. “Plug and Play” means the unit arrives ready for installation with no further programming needed. Once you install the module and connect the wiring, the vehicle will start and run correctly, as all the necessary vehicle-specific data is already loaded.
Will this fix my check engine light?
If the check engine light is on due to an internal fault with your original ECM (like code P0601), then this replacement module will solve the problem and the light will turn off. If the light is on for another reason (e.g., a bad oxygen sensor), that issue will need to be addressed separately.
Where is the ECM located on a 2004 Chrysler Pacifica?
On the 2004 Pacifica, the Engine Control Module is typically located in the engine compartment, mounted to the driver’s side inner fender, near the air filter housing. Always disconnect the battery before attempting to remove or install the module.
Does this part fit my specific Pacifica model?
This specific 2004 Chrysler Pacifica ECM is for All-Wheel Drive (AWD) models with a build date through July 11, 2003. Please verify your vehicle’s options and build date to ensure proper fitment.